210022216906897 has 2 divisors, whose sum is σ = 210022216906898. Its totient is φ = 210022216906896.

The previous prime is 210022216906883. The next prime is 210022216906939. The reversal of 210022216906897 is 798609612220012.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186089731043841 + 23932485863056 = 13641471^2 + 4892084^2 .

It is a cyclic number.

It is not a de Polignac number, because 210022216906897 - 2³¹ = 210020069423249 is a prime.

It is not a weakly prime, because it can be changed into another prime (210022216900897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011108453448 + 105011108453449.

It is an arithmetic number, because the mean of its divisors is an integer number (105011108453449).

Almost surely, 2^{210022216906897} is an apocalyptic number.

It is an amenable number.

210022216906897 is a deficient number, since it is larger than the sum of its proper divisors (1).

210022216906897 is an equidigital number, since it uses as much as digits as its factorization.

210022216906897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 210022216906897 in words is "two hundred ten trillion, twenty-two billion, two hundred sixteen million, nine hundred six thousand, eight hundred ninety-seven".